Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 701 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a baker (d) a farmer
2. 2.🔭 Does black cloth reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) a rainbow (d) two pictures
5. 5.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
6. 6.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) magnetism (d) evaporation
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) an empty juice carton (d) turmeric powder
9. 9.True or false: aluminium foil reflects light poorly. (a) False (b) True
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same carton (c) how clear the view is (d) the same light
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a ruler (c) an empty juice carton (d) a magnet
12. 12.True or false: a pencil is not needed for the periscope. (a) False (b) True
13. 13.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
14. 14.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a battery cell (c) a pencil (d) sticky tape
15. 15.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
16. 16.True or false: black cloth reflects light well. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) dark soil (d) black cloth
18. 18.🔭 Which of these reflects light poorly? (a) a dull brick (b) aluminium foil (c) still clear water (d) a shiny steel plate
19. 19.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) a mirror (d) aluminium foil
20. 20.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) vinegar (d) a ruler
22. 22.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) a rough wooden board (d) a mirror
23. 23.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
24. 24.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) dark soil (d) a shiny steel plate
25. 25.True or false: aluminium foil reflects light well. (a) False (b) True
26. 26.True or false: sticky tape is needed for the periscope. (a) False (b) True
27. 27.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same carton
29. 29.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) an empty juice carton (d) sticky tape
31. 31.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
33. 33.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
34. 34.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) turmeric powder (c) yeast (d) a balloon
35. 35.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) yeast (c) a ruler (d) an empty juice carton
38. 38.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) vinegar (d) yeast
39. 39.🔭 How many mirrors does a simple periscope use?
40. 40.True or false: turmeric powder is not needed for the periscope. (a) False (b) True

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